US 12,007,595 B2
Optical systems
John D. Le, Woodbury, MN (US); Gregg A. Ambur, San Clemente, CA (US); Zhisheng Yun, Sammamish, WA (US); Robert M. Jennings, Shoreview, MN (US); Arthur L. Kotz, Woodbury, MN (US); Timothy L. Wong, West St. Paul, MN (US); David T. Yust, Woodbury, MN (US); Timothy J. Nevitt, Red Wing, MN (US); and Kayla A. McGrath, Cottage Grove, MN (US)
Appl. No. 18/254,437
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Nov. 16, 2021, PCT No. PCT/IB2021/060626
§ 371(c)(1), (2) Date May 25, 2023,
PCT Pub. No. WO2022/130056, PCT Pub. Date Jun. 23, 2022.
Claims priority of provisional application 63/125,082, filed on Dec. 14, 2020.
Prior Publication US 2024/0004117 A1, Jan. 4, 2024
Int. Cl. G02B 5/30 (2006.01); G02B 1/04 (2006.01)
CPC G02B 5/305 (2013.01) [G02B 1/041 (2013.01)] 10 Claims
OG exemplary drawing
 
6. An optical assembly comprising:
a polymeric optical lens comprising opposing major first and second lens surfaces, at least one of the first and second lens surfaces curved; and
first and second polymeric optical films bonded to the respective major first and second lens surfaces, the first and second polymeric optical films having respective average thicknesses T1 and T2, respective elastic stiffnesses Q1 and Q2 in a same first direction, and respective thermal strains E1 and E2 in a same second direction, wherein the second polymeric optical film is a reflecting polarizing film and the first polymeric optical film is a mechanical balancing film such that products Q1×T1×E1 and Q2×T2×E2 are within 20% of each other.